Used for measuring/dispensing accurate volume 10 mL Graduated cylinder Used to hold an approximate volume × Volumetric Pipette × Volumetric flask disposable pipette Used to hold an accurate volume X 125 mL Erlenmeyer flask (also called conical flask) Items needed to set up a heating apparatus Iron Ring X 50 mL Graduated Cylinder × 100 mL Beaker Heat source such as a bunsen burner or Sterno fuel can × 50 mL Beaker Uncategorized answers Ring Stand × Wire mesh/gauze or clay triangle Watch glass Stirring/Glass Rod Spatula Buret Funnel

Used for measuring/dispensing accurate volume 10 mL Graduated cylinder Used to hold an approximate volume × Volumetric Pipette × Volumetric flask disposable pipette Used to hold an accurate volume X 125 mL Erlenmeyer flask (also called conical flask) Items needed to set up a heating apparatus Iron Ring X 50 mL Graduated Cylinder × 100 mL Beaker Heat source such as a bunsen burner or Sterno fuel can × 50 mL Beaker Uncategorized answers Ring Stand × Wire mesh/gauze or clay triangle Watch glass Stirring/Glass Rod Spatula Buret Funnel

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 125CP: Confronted with the box shown in the diagram, you wish to discover something about its internal...

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Suppose some measurements are made on two different homogeneous stones to find out if they are made of the same kind of rock. The mass and volume measurements are listed below. Are the two stones the same type of rock? Why or why not? Show all calculations. Mass Volume Calculations Stone 1 58.0 g 20.0 cm Stone 2 50.1 g 15.0 cm3 21/common/assets/pdfjs/1.0.0.30/web/viewer.ht...ndered-pdf&fullscreen=Dd21-fileviewer-rendered-pdf-dialog&height=746#0
Give the solution with proper sig figs. Determine the average of the densities of 4.523 g/ml, 4.556 g/ml, 4.821 g/ml and give the answer in sig figs. Sum = 4.523 g/ml + 4.556 g/ml + 4.821 g/ml = 13.9 g/ml or 13.90000000 g/ml Ave = 13.90000000 g/ml / 3 = 4.633333333 g/ml a. none of these b. 5 g/ml c. 4.633 g/ml d. 4.6333 g/ml e. 4.633333333 g/ml f. 4.63 g/ml g. 4.6 g/ml h. 4 g/ml
1. During the set-up of a distillation or a boiling point apparatus, the position of the bulb of the thermometer is crucial. Why is it so important to obtain accurate results?
Crystals have precipitated upon cooling a homogeneous solution of a compound. The crystals were then separated by vacuum filtration. Which of the following terms is the best term to correctly to describe the liquid after filtration? Supernatant Solvent Solution Soluble impurities Filtrate
Does it make a difference if you use a volumetric flask vs a beaker vs a graduated cylinder to make a solution?
C4H10(butane, gas used in lighters) Express your answer as a chemical equation. Identify all of the phases in your answer. C2H6O (ethyl alcohol, liquid used in gasohol and as race car fuel) Express your answer as a chemical equation. Identify all of the phases in your answer C8H18 (octane, liquid, a component of gasoline) Express your answer as a chemical equation. Identify all of the phases in your answer.
Use dimensional analysis to convert the volume for the English measurements of tablespoon and teaspoon to milliters giving your answers to two significant figures. How do these calculated values compare to the ones obtained in the experiment? (1 liquid oz = 29.57 mL; 1 cup = 8 liquid oz; 1 cup = 16 Tbsp.; 1 Tbsp. = 3 tsp.) English Measure Measured Volume in Milliliters (from the Test Data) Calculated Volume in Milliliters 1 Tablespoon (Tbs) 15 ml 1 Teaspoon (tsp) 5 ml show all work with units using dimensional analysis
The density of water is about 1 g/cm³. Predict whether the following objects will sink or float. Object Density (g/cm3) Sink or Float Cork 0.2-0.3 Float Anchor 7.8 Sink Spruce Wood Oar Apple Orange Orange without peel 0.4 Float 0.9 Float 0.84 Float 1.16 Sink
Of the flasks or laboratory instruments that are given, express their function (specify -if they can be used to measure- if their measurements are approximate or relatively exact) Erlenmeyer flask beaker burette
2.7g/cm^3 2.73445 g/cm^3 2.7345 g/cm^3 2.73 g/cm^3 2.734 g/cm^3
Now it's time to create, analyze and interpret a Chemistry-based graph! Let's do this in steps. Data Measurement number Temperature (°C) Solubility (g NaCl/100 g water) 1 0.00 35.2 2 20.0 36.1 3 40.0 37.0 4 60.0 37.7 5 80.0 38.4 100.0 39.0 Let's assume that you just finished your first research laboratory experiment and you collected the data listed above. Pay close attention to the titles. Based on the titles listed answer and complete the following: a. What would be the title of the graph? b. What set of data would you place on the y-axis? This is your dependent variable-measurable variable whose value depends on the independent variable. c. What set of data would you place on the x-axis? This is your independent variable-measurable variable of which when changed, the value of the dependent variable changes. d. Based on the data listed above, use the following site to make a Line Graph of the data listed above and turn it in here. e. Give a detailed CER writing response to the…
After creating her standard curve for absorption versus the concentration (M) of FD&C Red 40 and processing her data, Sally found that her drinking strength Kool-Aid sample had a concentration of 4.692 x 10–5 M. If 0.132 grams of Kool-Aid powder was used to prepare an 8-fl oz cup of her assigned flavor, what is the percent by mass of FD&C Red 40 in her Kool-aid powder? Report your answer as a percentage with two places after the decimal. Do not include the percentage sign in your answer. Pay attention to units. You are trying to find the mass percentage of red dye, so you need to know each variable in the equation in Appendix B. Note that the percent by mass equation should be multiplied by 100. There may be some useful conversion factors in the experimental procedure.